Vibration isolator device



Dec. 15, 1953 J. w. PA'rToN 2,662,720

VIBRATION ISOLATOR DEVICE Filed NOV. 19, 1948 2 Sheet'S-Sheet l IN VENTOR. l/0/7//1/ W PATTO/V BY @L TTOPA/.E Y

Dec. 15, 1953 J. w. PATToN 2,662,720

IIIIIIIIIIIIIIIIIIIIII E J Will" lnnllll INVENTOR. 0f/N W P/v @Trona/Vf?Patented Dec. 15, 1953 VIBRATION ISOLATOR DEVICE John W. Patton,Philadelphia, Pa., assigner to American Car and Foundry Company, NewkYork, N. Y., a corporation of New Jersey Application November 19, 194s,serial No. 60,909

(c1. 24a-35s) 4 Claims.

This invention relates to furniture and more particularly to furnituremounting means incorporating vibration isolator or absorbing devices.

Vibration and shock developed in railroad cars and other vehicles aretransmitted through the underframing and body to the supporting meansfor furniture in the car rooms. When furniture, such as tables, aresupported on the car wall as well as on legs, the vibration and shockare transmitted from the car wall and the fioor. The effect of vibrationand shock transmitted to tables and other furniture is objectionable tovehicle passengers.

An object of the invention is to reduce vibration and shock transmittedto vehicle furniture through the provision of isolator devices in thesupporting means.

Another object of the invention is to provide a novel isolator device ofthe compression type.

A further object of the invention is to reduce the vibration and shockflowing to a table of the wall attachment type through the use ofisolator devices in the supports.y

These and other objects of the invention will be apparent to thoseskilled in the art from a study of the following description andaccompanying drawings, in which:

Figure 1 isa perspective view of a fragment of a vehicle room having atable set up therein.

Figure 2 is a vertical elevational view in the room showing a portion ofthe table and one of the wall supports for the table.

Figure 3 is a sectional view taken on line 3-3 of Figure 2.

Figure 4 is a view similar to Figure 1 showing hinged supporting meansfor the table.

lFigure 5 is a vertical elevational view in the room showing a portionof the table and with one of the hinged supporting means partly insection taken on line 5 5 of Figure 6.

Figure 6 is a view taken on line 6-6 of Figure 5.

Figure 7 is an end view of the lower portion of the table leg andassociated vibration isolator device.

Figure 8 is a side view ofthe lower portion of the table leg with anapplied isolatorv device shown in section.

The invention is shown applied to a table I0 located in a vehicle room,which may be the interior of a railroad car, of which an outer wall IIand a floor I2 are illustrated. The table is preferably of thedetachable wall type used in railroad cars and is formed of sheet woodor other suitable material.

2 f The table is preferably provided vwith a three point supportconsistingof legA I3 adjacent one end and aA pair of spaced supportingmeans I4 at the other end. Wall II has a continuous anchor stripV I5extending longitudinally thereof having a slot formed by an under turnedflange I6 providing an anchor for hanger brackets I'I forming a part ofthe supportingmeans. These brackets have an out turned upper flange I8adapted to be inserted into Athe slot and over the underlyinganehorflange of strip I6 and that also have an out turned base portion I9 forcarrying the table. Between the hanger bracket bases I9 andthe wall endportion of the table, I arrange vibration and shock isolator devices 20.y'

In the arrangement shown in Figures 4 to 6 inclusive, there is arbacking strip 2| between the anchor strip and wall I-I and such backingstrip projects beneath the anchor strip and serves as a protector platefor the Wall. This form of the invention diers from that shown inFigures 1 to 3 inclusive in that the supporting bracket or hanger meansis formed of two hinged sections instead of being rigid. The uppersection 22 of this hinged hanger supporting means has the out turnedflange I8 adapted to be inserted over the flange I6 of the anchor stripand is connected with aflower section 23 by hinge 24. The lower section23 has an outwardly extending table supporting base flange I9 aspreviously described. In this form of the invention, the isolator device20 is arrangedbetween the base flange I9 and the'wall end portion of thetable. Member 22 hasoppositely disposed bumper devices 25 and 26 securedthereto, the device 26 being located to engage kagainst the dependingportion of the-backingstrip and the bumper device 25 serving to beengaged'by the table top when it is swung upwardly.

The isolator devices of the4 Wall supported hanger brackets shown inboth forms of the invention are similar so that a description of onedevice will sumce. 4A facing strip 2l. applied to the top of thebasesupporting flange I9 provides a seat for the cup-shaped base 28 ofthe isolator device. A bowl-shaped rubber member 29 formed with acylindrical base portion is.

mounted in the base 28 to which it is vulcanized or bonded and the upperedge portions of member 29 are bonded to thebase of an angular strip 30adapted to be attached to the wall end portion of the table by screws3|. Base flange I9, facing strip 21, base 28 and the circular baseportion of the rubber member 29 areformed with aligned openings for thereception of bolt 32 and an internally threaded metal sleeve 33 isvulcanized in the opening of member 29 for engagement by bolt 32. Theisolator device is clamped on the supporting bracket or hanger ange I9by the engagement of bolt 32 with sleeve 33 and the angular istrip o'fthe device is attached to the table by screws 3 I. The isolator deviceis formed of a unitary structure that is readily applied to or detachedfrom the table and the hanger support. These isolators serve to absorbwall vibrations and shocks before they reach the table.

The leg I3 may have a hinsedattachment with the table, of a conventionalnature, and the foot of the leg is provided with a vibration and s'hockisolator device 40. This device isgenerallysimilar to that utilizedbetween the Wall hanger'brackets and the table. A bowl-shaped rubbermember 4l has its upper edge portion bonded to a metal platen that isadaptedto, be detechably Secured to the, bottom of the tablgjeg byscrews,43. The reduced diameter base portion ofthe rubber member 4l iscylindrical and bonded to the inside of aangedmetaljannular 'basemember44, lThe base member and, the baise portion of the rubber member have,centrally aligned openings andan internallythreaded sleeve 4 5, lies inthe opening in. the, rubbermember and iS Secured by being vulcanized t othe;ru bbe r jmember. The head of bolt i provides supporting means 'forthe leg andits shank 41 Vis screwed into `the metal sleeve 45 of the-isolator This -isolator device is for1n ed ase unitary struct-ureA andcaribe readily attached to lor 'detachedffrom thebottoln ofthe tableleg.

It will be observed that the rubber member portionof the isolatordevices Supportsthelegjror the table under compression and Ais adaptedto absorb vibration and` shock-,transmitted `from the car oororwalljsogthat veryrlittieshcck or vibration reachesthe table-l.

The invention maygbe modied in various respectsiaswillxoccurtothosefskilled in theart and the exclusiveusegof. lallmodications as. come withintherscopeof the `appended:claims*iscontemplated.

What isnclairnedjls:v

1-. AA. vibrationxisolator device for., use between `a furmture leg and`a, supporting lstud having a threaded 'shank-comprising, airubber membera 'bowl-shaped 'upper portionA and l a cylindrical basefportiono'flessdianieter with a central aperturegtherethrough,- an internallythreaded"sleeve. inthe aperture of thebasef-portionof the rubber'memberxforfreceiving the studshan'k, a 'tiangedmetal yannularibasesmeirber. flttingover thecylindrical base portionofthe'rubber-.member formed withia 'bottomopening :for receiving said sleevetherein, said 'cylindricalbase portion of the rubber member being bonded'to the flanged metalannular :base member and to :'saidthradedA sleev'e,and-'anfimpertorate 'metal -plate for attachment to thefurnitureileg-ntirely overlying the open topot'tliebowlshapedupper-portioniof therubberme'mberlto whichthe latter isbonded.

2. `A vibrationfisolatordevice for--use-between'a furnituren leg andfasupporting 'stud Vhaving a threaded shank eompriing, a rubbermemberhaving va 'bowl-shaped upper portion 'and a, Sre duceddiametercylindriciafl base portion with-fa central aperturetherethrough, an internally threaded sleeve in the aperture ofVthe'bas'e portion ofthe rubberrnemberrforreceiving-the stud shank,ametal annularba'sefmember provided with 4an upstanding ange ttting,around 'the reduced diameter base portion of the rubber member andformed with a bottom opening into which said sleeve is extended, saidreduced diameter base portion of the rubber member being bonded to theflanged metal annular base member and to said threaded sleeve, and animperforate metal plate to which the bowl-shaped upper portion of therubber member is bonded, said'plate entirely overlying the open top ofthe bowl-'shaped upper portion of said rubber member and extendingtherebeyond adapted for securement to the end of the furniture leg.

3. In va vibration absorbing mounting, a rubber member 'having abowl-shaped upper portion and a reduced diameter cylindrical baseportion with a central aperture therethrough, an internally threadedsleeve extending through the aperture 'in the 'base portion, a flangedmetal annular'member surrounding the cylindrical base portion of therubber member formed with a bottom opening into which said sleeve isreceived, said baseportion of the rubber 'member being poniiedfo theflanged metal 'annular member and to the sleeve, and 'an'irripe'rfo'rate attachment plate overlying 'the'opfen top of the'bovvlsliaped upper portion of -the rubber member 'to `v`vhich thelatter Yis. `bo'nyiled. Y y l l Yfvi rati'n absorbing in'voux'itingfora'p'r'ilica'f tionlbetvjeenan object to Jbe Supported 'anda s iibit,iinbr c np'r'isihg. an lmnffr'afe t-f tachmentpiate secured tosaidjobjet. 'a rubber flerlaifile "a @wl-'Shaped upper perdn bonded 'tosaid attachment plate'ad Ha redue''i diameter cylindrical 4base portionwith afc'entral aperturetherethrough,said'attahmentplate'xf. tending`entirely aorosstle open top 'of lthe bouils'haped `portion `of saidrubber member, an .in- @really threaded; sleeve, exlelldlile llll-'gli'the apertureinlthe base portion of the rubber ineinber, ailar'ige'dmetalfaun'ular inem'b'er surrounds'aid cylindrical Ybaseportion yformedfvv'ith "an lements, been 'aruggh vhi'chfaidsiejvextends, said base portion 'of the rubber meinr ber' beingl bonded tothe annular 'member 'and to saids'lee've, 'and means engaging theinternally theadedfsleeve fior securing the rubber 'mem-A ber to thesupitzo'rt member.

"JOHN W. PATTON.

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